Bulletproof woven-wire fabric



Nov. 15, 1927.

C. A. SCHEELER BULLETPROOF WOVEN WIRE FABRIC Filed April 9, 1926Patented Nov. 15, 1927.

UNITED STATES CHARLES A. SCHEELER, OF BUFFALO, NEW YORK. ASSIGNOR TOBUFFALO WIRE WORKS PATENT OFFICE.

00., OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

. BULLETIBOOF WOVEN-WIRE FABRIC.

Application filed April 9,

This invention relates to a woven wire fabric which is more particularlydesigned to protect custodians of valuables from the bullets of banditsin attempting robbery.

Heretofore the cages which enclosed the tellers of banks and the moneyin their keeping usually consisted of ordinary woven wire fabric whichwas incapable of resisting the penetrating power of bullets shot fromstandard firearms and this left the ofiicials and the funds or othervaluables in their charge an easy prey to the bandits who were holdingup the banker other depositary. and often enabled them to get awaysafely with the valuables.

It is the object of this invention to provide a woven metal wire fabricof such composition that the same can not be pierced by bullets firedfrom the usual firearms but which will stop the passage of the bulletsand shred the same during the impact thereof against the protectingfabric or screen and thereby save harmless the custodian as well asprevent loss of the property under his care.

In the accompanying drawings Figure 1, is a rear view of a woven wirefabric or screen made of my improved composition and showing the mannerin which the bullet is arrested and shredded upon striking the screen.

Figure 2, is a front view of the same.

Figure 3, is a side view thereof showing the warp wires in elevation.

Figure 4, is a similar view showing the woof or weft wires in elevation.

In the metallic woven fabric or screen shown in these figures thenumeral 5 represents the warp or longitudinal wires and 6 the woof, weftor transverse wires which are interwoven in any suitable and well knownmanner so as to produce a mesh of comparatively small size.

The composition of this wire is such that it is sufficiently hard,tough, strong and flexible to yield under the impact of a bullet and yetnot break or rupture nor displace the wires so as to appreciably enlargethe mesh 1926. Serial No. 100,946.

of the screen and permit the passage of the bullet. Instead of this thescreen completely obstructs the passage of the bullet and causes thefront end of the same which passes through some of the meshes tobecomeshredded. as shown at 7, while the rear end of the bullet which has notpassed through the screen is left intact, as shown at 8. The result isthat the bullet merely penetrates the screen partly and is impaledthereon and its force is spent in the operation of cutting the same intoshreds by the crossed wires with which it engages, thereby rendering thesame harmless and also avoiding rupture of the screen. Even if someparts of the bullet should pass through the screen the force of the sameis so nearly spent and the direction of travel has been deflected thatthere is no liability of the person attacked being injured.

The ingredients in the composition which embodies my invention and ofwhich the wires of this improved screen are made consists of manganese,sulphur, phosphorus, silicon and carbon. and the preferred proportionsof the ingredients in this composition consist of manganese 1.10 to 1.20parts. sulphur .05 and less parts, phosphorus .025 and less parts,silicon .08 to .15 parts, and carbon .50 to .60 parts. These ingredientsmay be combined in any manner well known and approved in metallurgy.

Wire made from an alloy or composition containing these ingredients andproportions and drawn of the requisite gage and woven into a fabric ofcomparatively small mesh will provide a protecting screen having thecapacity of resisting the penetration of bullets as above described.

I claim as my invention:

A bullet proof metallic woven fabric hav-- ing its wires composed of1.10 to 1.20 parts of manganese, .05 or less parts of sulphur, .025 orless parts of phosphorus, .08 to .15 parts of silicon, and .50 to .60parts of car- In testimony whereof I afiix my signature.

CHARLES A. SCHEELER.

